Question

PLEASE HELP ME WITH THIS THANKS

Answer 1

Surface area = 2419.34 square meters

Solution:

The base is a heptagon. It have 7 sides.

Area of base (B) = $\frac{7}{2}ar$

                            $=\frac{7}{2}\times11\times11.42$

Area of base (B) = 439.67 m²

Perimeter of base (P) = Number of sides × side length of base

                                   = 7 × 11

Perimeter of base (P) = 77 m

Distance between bases = 20 m

Surface area of the prism = 2B + PH

                                           = 2 × 439.67 + 77 × 20

                                           = 879.34 + 1540

                                           = 2419.34 m²

Surface area = 2419.34 square meters